computerized tomography (spect) is a nuclear imaging technique that produces 3d computer-reconstructed images showing perfusion through tissues and organs.
T/F
Answers
Computerized tomography (spect) is a nuclear imaging technique that produces 3d computer-reconstructed images showing perfusion through tissues and organs. The statement is True.
SPECT, or single-photon emission computed tomography, is a nuclear imaging technique that produces three-dimensional (3D) computer-reconstructed images showing perfusion through tissues and organs.
Perfusion is the flow of blood through an organ or tissue. SPECT scans are used to diagnose a variety of conditions, including heart disease, stroke, Alzheimer's disease, and cancer.
SPECT scans are similar to PET scans, but they use different radioactive tracers. PET scans use positrons, which are antimatter particles that are emitted by radioactive elements. SPECT scans use photons, which are light particles that are emitted by radioactive elements.
SPECT scans are typically performed in a hospital or outpatient imaging center. The patient lies on a table that moves through a large, circular scanner. The scanner takes multiple pictures of the body from different angles. A computer then uses these pictures to create a 3D image of the body.
SPECT scans are a safe and painless procedure. However, there is a small amount of radiation exposure associated with the procedure. The risk of cancer from radiation exposure is very low, but it is important to talk to your doctor about the risks and benefits of SPECT scans before you have the procedure.
To know more about Computerized tomography, refer here:
https://brainly.com/question/15099886#
#SPJ11
Related Questions
the term describes the appearance of a cloudy broth culture.
Answers
The term that describes the appearance of a cloudy broth culture is "turbidity." Turbidity refers to the cloudiness or haziness of a liquid, which, in this case, is the broth culture. The cloudiness is typically caused by the presence of a large number of microorganisms growing in the liquid medium.
The term that describes the appearance of a cloudy broth culture is turbidity. Turbidity is caused by the presence of suspended particles, such as bacteria or other microorganisms, in the liquid medium. When a broth culture becomes cloudy, it indicates that the microorganisms have grown and multiplied within the medium, making it difficult to see through.
To know more about turbidity Visit:
https://brainly.com/question/30898937
#SPJ11
Humans, rabbits, and zebras all have an appendix, an extra piece in their digestive system, although in human is much smaller. A. What type of evidence of evolution is this? ______________________ B. Why is this evidence of evolution
Answers
A. Anatomy in comparison B. The presence of a comparable structure in several species with distinct purposes means that it originated from a shared ancestral characteristic.
implying a common ancestor. This lends credence to the idea of natural selection, which holds that hereditary variants that give an advantage for survival and reproduction are transmitted down through generations. Humans, rabbits, and zebras all have an appendix, an extra piece in their digestive system, although in human is much smaller. A. What type of evidence of evolution is this B this evidence of evolution,Anatomy in comparison The presence of a comparable structure in several species with distinct purposes means that it originated from a shared ancestral characteristic.
learn more about Humans here:
https://brainly.com/question/11655619
#SPJ4
Which of the following statements about marriage prohibitions in the United States is correct? Consanguineous unions (fist-cousin marriage) show an increase of more than 8 percent in predicted birth defects of offspring Cousin prohibitions in marriage were enacted by law in the United States long before genetic research began. Inbreeding was considered a sign of family viability and success in the United States in the early 1900s. There is a lower risk of birth defects in offspring from women who are older than 50 years than in first-cousin marriages.
Answers
The correct statement regarding marriage prohibitions in the United States is that consanguineous unions (fist-cousin marriage) show an increase of more than 8 percent in predicted birth defects of offspring.
According to genetic research, marriages between cousins are associated with an increase of more than 8 percent in predicted birth defects of offspring. Many states in the United States have banned first-cousin marriage due to the high probability of birth defects, such as Alabama, California, Florida, and so on. While it is legal in a few states, it is only permitted under specific conditions, such as medical counseling. Consequently, consanguineous marriages are discouraged in the United States because of the increased risk of genetic anomalies.
The state of being related by blood is known as consanguinity, and the terms consanguineous relationships or unions are used to describe relationships between relatives who are related by blood.
Know more about consanguineous unions, here:
https://brainly.com/question/545744
#SPJ11
unlike psychodynamic therapists, humanistic therapists tend to focus on the ________ more than the ________.
Answers
Answer:
The answer is present; past.
Explanation:
unlike psychodynamic therapists, humanistic therapists tend to focus on the present more than the past.
technological methods used to assess phylogenetic relationships at the scale of molecular genetics
Answers
The technological methods used to assess phylogenetic relationships at the scale of molecular genetics are called molecular phylogenetics.
Phylogenetics refers to the study of evolutionary relatedness among different species. It is the process of developing hypotheses of evolutionary relatedness among groups of organisms, known as phylogenies. It involves analyzing their similarities and differences based on the morphology, genes, and behavior of the organisms. Molecular phylogenetics is a branch of biology that deals with the study of evolutionary relationships among organisms based on their molecular genetic characteristics. This method utilizes molecular sequences of DNA and RNA to infer phylogenetic relationships between different species. This technique provides a more precise estimation of evolutionary relationships between different organisms. Molecular phylogenetics uses several technological methods to assess the relationships between different organisms. Some of these techniques include: Polymerase Chain Reaction (PCR)DNA SequencingRestriction Fragment Length Polymorphism (RFLP)Hybridization techniques Phylogenetic analysisConclusionMolecular phylogenetics is a field of biology that deals with the study of evolutionary relationships among organisms based on their molecular genetic characteristics. It involves using several technological methods to assess phylogenetic relationships between different species. Some of these methods include Polymerase Chain Reaction (PCR), DNA Sequencing, Restriction Fragment Length Polymorphism (RFLP), Hybridization techniques, and Phylogenetic analysis.
To learn more about phylogenetics here
https://brainly.com/question/30416143
#SPJ11
Solve the tenth question
Answers
Cladograms are representations of evolutionary relationships between taxa. From cladograms we can get to know derived characters, oldest ancestors, the most recent groups, and the outgroups.
What is a cladogram?A Cladogram is a graph drown as a tree, which is based on cladistic analysis. It represents the common ancestral relationships and the emergence of different characters among the involved groups.The tree-type graph is a ramified diagram that represents the relationship between the involved taxa.
The cladistic analysis follows the maximum parsimony criterium. Explains the character state from the point of view of the fewest changes through history. Explains evolution with the minimal amount of evolutive changes. It recognizes the monophyletic groups as natural groups. These groups are the clades, and their classification -sequencing- represents their phylogeny. The sequencing term refers to lists of groups according to their relation. One group is the brother-group of the following one.So the cladogram represents the relationship between groups according to a derived character.
The derivated character is any trait that a group passes to the descendants. Through evolution, the characters change, and new changes are added. When referring to a derivate character, we mean that all the subsequent species in the cladogram carry the trait.
A cladogram provides an image of how new species keep characters that were inherited from older species.
You can learn more about cladograms at
https://brainly.com/question/12275760
#SPJ1
TRUE/FALSE.An undifferentiated cell is a cell that has not specialized yet. An example would be an unfertilized egg cell.
Answers
What is an experimental design and annotated bibliographies? And what’s a good environmental science experiment? I know it’s a dumb question but it’s worth a shot
Answers
Answer:
Experimental design means planning a set of procedures to investigate a relationship between variables, or experimental design refers to how participants are allocated to the different groups in an experiment. The types of design include repeated-measures, independent-groups, and matched pairs design.
Annotated bibliography provides specific information about each source you've used. As a researcher you have become an expert on your topic: you have the ability to explain the content of your sources, assess the usefulness, and share this information with others who may be less familiar with them.
Annotated bibliography is a list of citations to books, articles and documents.
Good environmental science experiments are;
1.Water science fair projects.
2. Air quality Science fair projects
3. Climate change Science fair projects
4. Solid waste recycling Science fair projects.
Explanation:
Hope it helps.
Which statement is true about a nucleus? a It is surrounded by a membrane. b It is the site of enzyme storage. c It is surrounded by the nucleolus. d It is the site of energy conversion.
Answers
Answer:
Option D
Explanation:
The well defined nucleus is absent in prokaryotes whereas the well defined nucleus covered with nuclear envelope is present in eukaryotes. The site of replication and transcription is the nucleus in the living organism.
The nucleus contains the double membrane structure. Outer membrane and inner membrane covers the nucleus. Nucleus also contains the nuclear pore through which molecules can move inside and outside of the nucleus and the cytoplasm.
What would the answer be? I need it asap!!!
Answers
Answer:
Galactose
Explanation:
The enzyme 2 that acts on galactose will be unavailable hence Galactose will increase
What are the set of phenotypic traits that benefit a species in a given environment?
Group of answer choices
genotypes
mutations
phenotypes
adaptations
Answers
Answer:adaptions
Explanation:
Victor put a match on a balance and found that its mass was 6.0 grams. Then he lit the match and put it out after a few seconds.
He put the partially burned match on the balance again. This time, its mass was 4.5 grams.
Which of the following best explains what happened as the match burned?
A.
Some of the mass was destroyed by the fire.
B.
The mass of the match combined with the mass of the fire.
C.
The matter moved to a different part of the match.
D.
Some of the matter changed from solid to gas and went into the air.
Answers
Answer: It releases oxygen and heat. The answer is C
Stored inside the match head is another chemical called “potassium chlorate”. When it gets hot, it releases a lot of extra oxygen and heat. This makes the match head burn quickly and strongly. When you put it all together the heat, the fuel, and the oxygen you get a flame. Matter does not go when something is set on fire. Matter is always the same. Burning is a chemical process. The flames are caused as a result of a fuel undergoing combustion (burning). (CC BY-SA 2.5; Einar Helland Berger for fire and Walter Siegmund for ash).
Answer:
Explanation:
heyyyyyyyyyyyyyyyyyyyyyyyyyyyy
how it going long time no talk
A biologist used the radioisotope tritium (3H) to label thymine and the radioisotope carbon-14 (14C) to label uracil. She then incubated a growing bacterial culture with both labeled bases. After five hours of incubation, the biologist extracted polynucleotides from the cells and separated them into three groups, each containing a range of different polynucleotide lengths. The first group contained the shortest polynucleotides. The second group contained polynucleotides of midrange length, and the third group contained the longest polynucleotides. Then she determined the percentage of each radiolabel in each fraction. Her data are summarized in the table above. Which statement represents a reasonable hypothesis that could explain these results?Uptake of 3H label resulted from DNA replication, and uptake of 14C label resulted from transcription.
Answers
The statement that represents a reasonable hypothesis that could explain these results is Uptake of 3H label resulted from DNA replication, and uptake of 14C label resulted from transcription.
The process by which a double-stranded DNA molecule is duplicated to form two identical DNA molecules is known as DNA replication. Replication is necessary because when a cell splits, the two new daughter cells must have the same genetic information, or DNA, as the parent cell.
The process of transcribing a piece of DNA into RNA is known as transcription. Messenger RNA is created when segments of DNA are translated into RNA molecules that can encode proteins. Other DNA sequences are transcribed into RNA molecules known as non-coding RNAs. Only 1-3% of total RNA samples contain mRNA.
To learn more about DNA replication and transcription, here
https://brainly.com/question/30192876
#SPJ4
Logistic growth describes how a population's growth is
Answers
Answer:
In logistic growth, population expansion decreases as resources become scarce, and it levels off when the carrying capacity of the environment is reached. The logistic growth curve is S-shaped.
Explanation:
Hope this will help you :)
how can geography provide information about the past histories of both living and the surface of Earth?
Answers
(GIVING BRAINLIEST!!)
Two types of clouds and described below.
Cloud 1: Long columns that stretch high into the sky; often bring heavy rains, snow, and hail
Cloud 2: Long, gray, and cover most of the sky; often bring light rain, sleet, or snow
Which statement is true about the clouds?
A) Cloud 1 is a cirrus cloud, and Cloud 2 is a cumulus cloud.
B) Cloud 1 is a cumulonimbus cloud, and Cloud 2 is a stratus cloud.
C) Cloud 1 is a stratus cloud, and Cloud 2 is a cumulonimbus cloud.
D) Cloud 1 is a cumulus cloud, and Cloud 2 is a cirrus cloud.
Answers
Answer:
Its b
Explanation:
Answer:
The correct answer is B. Choice B is the only answer that correctly solves the problem. The other choices are either incorrect or do not provide enough information to solve the problem.
Explanation:
A cumulonimbus grows high and can bring so much precipitation. This is because the cumulonimbus cloud is formed from warm, moist air that rises into the atmosphere. As the air rises, it cools and condenses into water droplets that form a cloud. This process also produces lots of rain and/or snow as the droplets become too heavy to stay in the cloud and are released as precipitation.
The stratus cloud can also bring light rain, sleet, or even snow. And they also cover most of the sky. As you move through the atmosphere, the air becomes cooler. As the temperature drops, the air molecules start to condense and form droplets that travel through the air currents. As the droplets become thicker and heavier, they are released as precipitation. Stratus clouds are low-level clouds that can bring light rain, snow, or sleet. They typically cover most of the sky, blocking out the sun.
pls, mark me the brainliest!
Identity Factors in an Experiment
WARM-UP
Consider what you already know about scientific design. To set up an experiment testing whether
students' grades are affected by their level of exercise, which factors do you think you would need to keep
in mind? Check all that apply.
student gender
vpe of exercise
amount of exercise
what grades are measured
how long the experiment will last
what time of day the students exercise
how much time the students spend studying
DONI
Answers
Answer:
Did you copy and paste this from somewhere because i want to help but i don't understand it at all.
Explanation:
What determines the direction that glucose is transported across the membrane, through a glucose transporter?.
Answers
please answer fast I'll mark brainliest
Match each structure to its function anther protects the flower bud ovule produces pollen sepal contains egg cells petal O surrounds the reproductive structures
Answers
Answer:
anther: produces pollen
ovule: contains egg cells
sepal: protects the flower bud
petal: surrounds the reproductive structures
Explanation:
Answer:
anther: produces pollen
ovule: contains egg cells
sepal: protects the flower bud
petal: surrounds the reproductive structures
Which biome has the least precipitation?
A. rain forest
B. grassland
C. tundra
D. taiga
Answers
Answer: Option C.
Tundra
Explanation:
Tundra is a biome that has low Precipitation. Precipitation is a form of water that fall from the atmosphere to the Earth surface. Which could be inform of snow, sleet e.t.c.
Tundra is the coldest of all types of biomes. It has low temperature, little precipitation,low nutrients. It is located near the north Pole of the Earth. It is characterized by permafrost, permanent frozen layer on its surface.
Experimental Insight 2.1 describes data on the kernel color distribution of bicolor corn, collected by a genetics class like yours. To test the hypothesis thatthe kernel color of bicolor corn is the result of the segregation of two alleles at a single genetic locus, the class counted 9882 kernels and found that 7506were yellow and 2376 were white. Use chi¬square analysis to evaluate the fit between the segregation hypothesis and the class results.
Part A Calculate the chi¬square value for this experiment.Express your answer using two decimal places.
Part B
Determine the number of degrees of freedom for this experiment.
Part In what interval does P value fall for the calculated chi¬square value and one degree of freedom?
Part D
Should the hypothesis be rejected?
Answers
The hypothesis can be rejected as p value is not significant for the experiment.
A) Let q represent the frequency of the recessive allele and p represent the frequency of the dominant allele (yellow) (white). If the hypothesis is true, then p + q = 1 and the predicted frequencies of yellow and white kernels are 9882p and 9882q, respectively.
The sum of the squared differences between the observed and predicted frequencies, divided by the expected frequencies, yields the chi-square value:
X^2 = (7506 - 9882p) (7506 - 9882p)
^2 / (9882p) + (2376 - 9882q)^2 / (9882q) (9882q)
We arrive at p = 0.75 and q = 0.25 after solving for p and q. Therefore, the chi-square value is:
X^2 = (7506 - 7415.5) (7506 - 7415.5)
^2 / 7415.5 + (2376 - 2466.5) (2376 - 2466.5)
^2 / 2466.5 = 0.849
Therefore, this experiment's chi-square value is 0.849.
b) The degree of freedom for the given experiment is one.
c)Statistical tables or software can be used to determine the P-value for a chi-square distribution with one degree of freedom and a specific chi-square value. If the null hypothesis—in this case, the segregation hypothesis—is true, the P-value shows the likelihood that a chi-square value will be as extreme as or more extreme than the computed value.
d) P value is not significant hence experiment is rejected.
To know more about experiment, click here,
brainly.com/question/17274244
#SPJ4
What field of biology do you find most interesting? Why?
Answers
Answer:
zoology
Explanation:
i would say i love this field because it deals on animals which happen to be pets and animals i would say also needs medical attention when the need arises
Answer:
Molecular pathology
Explanation
It is the study parasites, viruses etc. In this field you get to disect animal's and potentially find a cure for these things.
Arsenic does not have any valence electrons in the 3d orbital because
Answers
Answer:
it's 3d orbital is completely filled.
Explanation:
55. Chromosomes do not separate correctly during anaphase, resulting in 1 or 3 chromosomes rather than
2 per cell is called.
a. Duplication
b. Nondisjunction
c. Translocation
56. Choose the best word to fill in the blank. Often one's determines one's position in life.
a. extraction
b. pedigree
c. ineptness
d. calculation
57. When pieces of non-homologous chromosomes exchange segments (during crossing over) is called
a. Duplication
b. Nondisjunction
c. Translocation
58. What happens to a change in a DNA sequence?
a. Mutation
b. Somatic mutations
c. Mutagens
59. What term refers to a family tree that shows the relationships of parents and children to one another
across generations?
a. pedigree
b. genotype
c. phenotype
Answers
Answer:
"Nondisjunction" in meiosis II results from the failure of the sister chromatids to separate during anaphase II.
using the 2nd law of thermodynamics, explain why many poor people in developing countries live on a mostly vegetarian diet.
Answers
The second law of thermodynamics states that energy cannot be created or destroyed, but it can be transferred or transformed from one form to another. This law also states that energy will always move from a high-energy state to a low-energy state. In the case of poor people in developing countries, this means that they do not have access to high-energy foods like meat and dairy products, which require a lot of energy to produce.
Instead, they rely on a mostly vegetarian diet, which includes foods like grains, legumes, and vegetables. These foods require less energy to produce and are therefore more accessible to poor people in developing countries. Additionally, vegetarian diets are often more sustainable and environmentally friendly, as they require less land, water, and other resources to produce.
In conclusion, the second law of thermodynamics explains why many poor people in developing countries live on a mostly vegetarian diet. This is because they do not have access to high-energy foods like meat and dairy products, which require a lot of energy to produce. Instead, they rely on lower-energy foods like grains, legumes, and vegetables, which are more accessible and sustainable.
Here you can learn more about law of thermodynamics
https://brainly.com/question/3808473#
#SPJ11
In the video, what is the primary sugar being pulled out of the hole high in the tree? In the video, what is the primary sugar being pulled out of the hole high in the tree? glycogen lactose glucose starch sucrose Previous AnswersRequest Answer Incorrect; Try Again; 5 attempts remaining Part B Monosaccharides __________, and polysaccharides __________. Monosaccharides __________, and polysaccharides __________. cause diabetes; cause obesity are single monomer units; are made of many monosaccharides chained together include cellulose; include glucose are made of proteins; are made of enzymes
Answers
Answer:
1) Glucose
2) are single monomer units
3) are made of many monosaccharides chained together
Explanation:
In the video, GLUCOSE is the primary sugar being pulled out of the hole high in the tree.Part B
Monosaccharides are single monomer units; and polysaccharides are made of many monosaccharides chained together. Monosaccharides are single monomer units, and polysaccharides are made of many monosaccharides chained together include cellulose.
Hippopotamuses live in Africa’s rivers and lakes. They’re herbivores and coexist with other herbivores and carnivores. Which action could lead to a decrease in the number of hippos?
A.
a decrease in the number of predators
B.
a decrease in the number of other herbivores
C.
an increase in the number of producers
D.
an increase in the number of other herbivores
Answers
Answer:
D
Explanation:
hippo funny, use common sense silly bean
Answer:
D, an increase in the number of herbivores.
Explanation:
D is the correct answer because an increase in other herbivores would mean more competition for food, and more herbivores means that they would be eating/taking the hippo's main source of food.
which amplifier circuit would couple better with the detector circuit of task 1? comment on this in your lab repo
Answers
The common emitter amplifier would couple better with the detector circuit of task 1.What is amplifier?An amplifier is an electronic device that raises the voltage, current, or power of a signal. Electronic amplifiers are commonly used in radio and television transmitters and receivers, as well as sound reproduction systems to increase the volume of music or the voice of a speaker.
An amplifier circuit is the electronic circuit that makes use of an amplifier. There are numerous different amplifier circuit types, each with its own set of features and applications.What is detector?A detector is an electronic device that converts high-frequency waves into low-frequency direct current signals.
In a radio or television receiver, a detector detects the radio frequency signal in order to demodulate it, or remove the radio frequency carrier, and extract the original information (audio or video) transmitted by the broadcast station.In an electrical circuit, a detector is a component that converts the information contained in a waveform into a form that can be utilized by the remainder of the circuit. It frequently creates a voltage or current signal that is proportional to the input waveform.
There are several types of detectors, including diode detectors, balanced detectors, and phase detectors.Amplifier circuit that would couple better with the detector circuit of task 1 is common emitter amplifier circuit. A common-emitter amplifier is an electronic amplifier circuit in which the emitter terminal of a bipolar transistor is used as the input, the collector terminal as the output, and the base terminal is grounded. The circuit is widely utilized in electronic devices and is one of the most common transistor amplifier configurations. As a result, a common emitter amplifier is frequently employed as the first stage in an electronic device, particularly in radio or television transmitters and receivers. It amplifies a small AC voltage signal to a larger AC voltage signal with the same polarity.
Learn more about amplifier:
https://brainly.com/question/29604852
#SPJ11
mitosis maintains living organisms by which of the following processes?
1. the removal of waste from the body
2. the exchange of gas with the environment
3.the healing of a cut after an injury
4. the formation of sperm and egg
Answers
Answer:
3
Explanation:
mitosis helps in the reproduction of identical copies of cells thus helping in the repairing of damaged tissues or replacing worn out cells
When cells are not dividing, the genetic material is loosely dispersed throughout the nucleus in a threadlike form called _________________.
Answers
When cells are not dividing, the genetic material is loosely dispersed throughout the nucleus in a threadlike form called chromatin.
Chromatin consists of DNA molecules tightly coiled around proteins called histones. This arrangement allows for efficient storage and access of genetic information. The chromatin structure is dynamic and can undergo changes to regulate gene expression. During cell division, chromatin undergoes further condensation and compaction to form distinct structures called chromosomes.
These condensed chromosomes facilitate the accurate segregation of genetic material into daughter cells. However, in non-dividing cells, the chromatin is in a more relaxed state, allowing for transcription and gene regulation processes to occur. The chromatin structure can be modified by various epigenetic mechanisms, influencing gene expression patterns and cellular identity.
Know more about Nucleus here:
https://brainly.com/question/23366064?referrer=searchResults
#SPJ11